Efficient DCT-Domain Blind Measurement of Blocking Artifacts

It is well known that low bit rate block-based discrete cosine transform coded images exhibits visually annoying coding artifacts. It is of interest to be able to numerically assess the degree of blocking artifacts as it plays an important role in the design, optimization and assessment of image and video coding systems. A novel algorithm for image blocking artifact detection is presented in this paper. Experimental results illustrating the performance of proposed method are presented and evaluated. Our experiment results show that the proposed method of measuring blocking artifacts exhibits satisfactory performance as compared to other post-processing method's/techniques and is very efficient and stable since the signal need not be compressed/decompressed.